EP0452769A1 - Überwachung der Druckqualität und der Schneidqualität in einer Produktionsanlage zur Herstellung von Verpackungen - Google Patents

Überwachung der Druckqualität und der Schneidqualität in einer Produktionsanlage zur Herstellung von Verpackungen Download PDF

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Publication number
EP0452769A1
EP0452769A1 EP91105523A EP91105523A EP0452769A1 EP 0452769 A1 EP0452769 A1 EP 0452769A1 EP 91105523 A EP91105523 A EP 91105523A EP 91105523 A EP91105523 A EP 91105523A EP 0452769 A1 EP0452769 A1 EP 0452769A1
Authority
EP
European Patent Office
Prior art keywords
window
waste
printing
marks
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91105523A
Other languages
English (en)
French (fr)
Other versions
EP0452769B1 (de
Inventor
Olivier Porret
Roger Roch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bobst Mex SA
Original Assignee
Bobst SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bobst SA filed Critical Bobst SA
Publication of EP0452769A1 publication Critical patent/EP0452769A1/de
Application granted granted Critical
Publication of EP0452769B1 publication Critical patent/EP0452769B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/007—Control means comprising cameras, vision or image processing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
    • Y10T83/148—Including means to correct the sensed operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/162—With control means responsive to replaceable or selectable information program
    • Y10T83/166—Removable element carries program
    • Y10T83/169—Indeterminate length, web or strand
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/541—Actuation of tool controlled in response to work-sensing means
    • Y10T83/543—Sensing means responsive to work indicium or irregularity

Definitions

  • the subject of the present invention is a method and a device for controlling the quality of printing and cutting in a train of machines working with strip or sheet material with a view, for example, to the production of packaging.
  • the production of packaging for example cardboard, corrugated or not, goes through at least three successive phases: printing, cutting and folding-gluing.
  • the quality of the final product therefore depends on the quality of each phase taken individually.
  • the present invention essentially relates to the control of the quality of printing and cutting.
  • the printing control has been carried out visually after the printing machine, for example by flexography, that is to say that a person instructed on the requirements for the quality of printing can, after a fairly large practice, have enough knowledge, experience and skill to be able, after a quick look at the printing of different colors that has just been done in groups correspondents of a printing machine, to make a judgment on the quality of the printing, that is to say to decide whether or not the printing examined is acceptable.
  • the printing machine continues its production which will be sent to the next phase, that is to say cutting; if the printing is not acceptable, the operator of the printing machine will be informed and will bring to the control of the printing machine the modifications necessary to correct the printing defect (s). It is recalled here that the printing can be done while the material is in the form of a continuous strip or in the form of successive sheets which pass.
  • the quality control of the cutting is also carried out essentially visually and in the same way as the control of the printing, i.e. if, in the opinion of the operator or other qualified person, the value of the distance between the edge of a pose and the start of its printing is located within an order of magnitude given a priori, the cutting machine continues its production which will be routed, for example, to the folding phase- collage; if this is not the case, the operator will take the measures necessary to correct the positioning of the blank relative to the print.
  • Figure 1 shows a machine comprising an introduction station 1, cutting 2, ejecting 3 (waste) and receiving 4 (poses or sides).
  • the front edge of a sheet F taken from the package 5 is introduced into a clamp bar 6 moved by a chain of chains 7.
  • the sheet F is then transported through the various work stations 2, 3, 4.
  • the receiving station 4 only the waste remains on the gripper bar 6 front Df of sheet F.
  • the front waste Df, removed from the clamp bar 6 in a place located on the return from the top of the chain train 7, will be removed from the machine by means of a conveyor belt 8. It it is recalled that each of these operations is carried out at a stop of the gripper bars 6.
  • a camera 10 is provided placed above and in front of the front waste Df.
  • FIG. 2 shows the part of the front waste Df located opposite and around the field of vision of the camera 10. At this stop, the waste Df is therefore held in place by clips 6a of the bar 6.
  • the clips 6a are in taken with the extreme front edge B1 of the waste Df, this front edge B1 being opposite to that B2 formed by the line of separation S, that is to say of cutting, between the waste Df and the corresponding laying (not shown) , in other words by the shape of the cutting threads mounted on the cutting press.
  • This dividing line S is not straight over the entire length of the waste Df, but is also composed of parts S1, S2 forming an angle between them, for example 90 °. Thereafter, two non-successive aligned parts S1, S2 will be designated by the term "cutout D".
  • each mark corresponding to one of the five printing groups of a flexographic printing machine.
  • Each R1-R5 mark therefore corresponds to a color.
  • a number greater than or less than five brands can of course be envisaged.
  • the camera therefore has the function of simultaneously reading the five marks R1-R5 and the cutout D when the waste Df is stopped; at each reading, the waste Df is lit by means of a flash, the control of which is synchronized with that of the cutting.
  • the flash makes it possible to reduce as much as possible the ambient causes of error or inaccuracy of reading, such as, for example, the vibration of the waste Df in the direction of the chain of chains 7.
  • the flash can be replaced by a continuous lighting with controlled exposure time.
  • the computer unit is connected to the control panel of the "MACHINE ELECTRIC CONSOLE” machine using two supply lines at + 24 V and 0 V, a read command line “TOP LECTURE", d 'a line called “STOP MACHINE” allowing to interrupt the introduction of the sheets or to stop the cutting press, of a line making it possible to control an "intermediate system” when a fault is detected by the machine in order to facilitate sorting the operator.
  • These 5 lines pass through a "MACHINE INTERFACE” element which has the function of realize the interface between the machine and the control unit.
  • This front waste Dfm comprising the printed marks R1m-R5m and a cutout Dm, is chosen as follows: from the first printed sheets of a series and which leave the printing machine (not shown, but which, in the train of machines for packaging production, is before the cutting machine), is chosen, by a qualified and experienced person, a sheet F "model", that is to say satisfying very particularly the qualities of impression. It is also checked whether the five marks R1-R5 for locating colors are present and at the desired location, that is to say if each has actually been printed by the corresponding printing group.
  • the “model” sheet is then introduced into the cutting machine and through its various stations 1-4.
  • this first "model” sheet is stopped under the camera 10, the latter is positioned so that the assembly called "target” and constituted by the five marks R1m-R5m and the cut Dm of the "model” waste Dfm is positioned in the field of vision of the camera 10.
  • the control device allows, from a main menu screen "MAIN MENU”, to choose, by means of the functional keys, to call submenus (see for example Figures 7 to 11).
  • the operation or the scene of locating the reference target in the field of vision of the camera 10 is visible in the form of an active image on the screen of the control unit.
  • a distance or a rimpedement of the camera 10 with respect to the waste Dfm can also contribute to the location of the "target”.
  • the operator or other qualified person, is therefore also able to visually check on the screen "A" if the Dm cutout meets the conditions required for its position relative to that of the brands R1m-R5m. If this is not the case, a lateral displacement of the reading unit (camera + flash) is carried out so that the printing and cutting marks are positioned inside the field of vision of the camera.
  • the quality control process involves a comparison of the position of the marks R1m-R5m and the cut Dm of the model Dfm waste with that of the marks R1-R5 and the cut D of a waste Df called “sample” resulting from the machine during production
  • the control device makes it possible to calculate and memorize the position of the marks R1m-R5m and of the cutout Dm in the field of vision of the camera.
  • the control unit is equipped with means allowing the opening, in the field of vision, of the first two spaces, called “windows” in which the probability of finding the marks R1m-R5m, or the Dm cutout, is the greatest.
  • This method of detecting and measuring position using a "window” is relatively well known in the technical field of image processing, a field to which it is possible to refer here for further information, since the present method of quality control uses it extensively.
  • the control device allows, while the marks R1m-R5m and the cutout Dm are visible on the screen "A”, using the "TRACKBALL” to position, move, center and size a first window called “PRINT WINDOW” centered on all five brands R1m-R5m, and a second window relating to the Dm cut and called “CUT WINDOW”.
  • PRINT WINDOW a first window centered on all five brands R1m-R5m
  • CUT WINDOW a second window relating to the Dm cut and called "CUT WINDOW.
  • the cut Dm is taken at a characteristic location, comprising a lateral cut S1 and a longitudinal cut S2; indeed, such a cut Dm, formed by two lines S1, S2 forming an angle between them, for example of 90 °, is detected and measured with much more speed, precision and reliability than another part of the line of cutting S being in the form of a simple straight line.
  • search windows are also automatically determined by the system, namely 5 search windows relating to printing known as "PRINT SEARCH WINDOW", that is to say one window for each R1m mark. -R5m, and a search window relating to the so-called “CUT SEARCH WINDOW” cutout, as shown in FIG. 3 in which are shown, on an enlarged scale (for reasons of clarity) the Dm cutout and the five brands R1m -R5m relating to the Dfm model.
  • the "CUT SEARCH WINDOW” window is represented centered on the Dm model cutout and a "PRINT SEARCH WINDOW” window is represented on each R1m-R5m mark.
  • control unit also makes it possible to maintain statistical control of all the main results (see Figure 11), control which makes it possible to define the moment from which, for example, an alarm signal, visual or audible, must be transmitted to the operator ( Figure 10).
  • Screen "A” ( Figure 8) includes an active image of a view of the marks and the cutting of a sample.
  • the "B1" screen (figure 9) displays the parameters and results of each check.
  • the screen "B2" (figure 10) is that relating to the alarm.
  • Screen “C” gives an image of the marks and the breakdown of the "sample” waste (“SAMPLE”) simultaneously with those of the reference waste (“STANDARD").
  • the "scrolling" concerning the alarm triggering level or the machine stop is within the limits of 1 to 200 in steps of 1.
  • the computer unit can keep in non-volatile memory the last parameters used for the definition of a program, as well as those of the windows. These parameters will be the default values used during the next power up.
  • the method described above can also provide a warning signal and / or an alarm signal during production after a predetermined number of sheets exhibiting an out of tolerance defect.
  • These signals can be used to warn the operator, by optical or acoustic means, either to act directly on the machine by stopping production, or to mark the waste Df by any means such as ink, label, etc. .etc, or by activating an automatic waste ejection device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • General Factory Administration (AREA)
  • Image Processing (AREA)
  • Image Analysis (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Packaging Of Special Articles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
EP91105523A 1990-04-18 1991-04-08 Überwachung der Druckqualität und der Schneidqualität in einer Produktionsanlage zur Herstellung von Verpackungen Expired - Lifetime EP0452769B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1301/90 1990-04-18
CH1301/90A CH682600A5 (fr) 1990-04-18 1990-04-18 Procédé de contrôle de qualité de l'impression et du découpage dans une installation de production d'emballages.

Publications (2)

Publication Number Publication Date
EP0452769A1 true EP0452769A1 (de) 1991-10-23
EP0452769B1 EP0452769B1 (de) 1995-07-12

Family

ID=4207238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105523A Expired - Lifetime EP0452769B1 (de) 1990-04-18 1991-04-08 Überwachung der Druckqualität und der Schneidqualität in einer Produktionsanlage zur Herstellung von Verpackungen

Country Status (9)

Country Link
US (1) US5241483A (de)
EP (1) EP0452769B1 (de)
JP (1) JP2653729B2 (de)
AT (1) ATE124902T1 (de)
CA (1) CA2040533C (de)
CH (1) CH682600A5 (de)
DE (1) DE69111122T2 (de)
DK (1) DK0452769T3 (de)
ES (1) ES2074601T3 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453974A3 (en) * 1990-04-26 1993-01-27 Bobst S.A. Controlling the print and cut quality in a machine for the production of packagings
EP0810092A1 (de) * 1996-05-30 1997-12-03 GRAFICHE EIKON S.r.l. Vorrichtung und Verfahren zur Überprüfung von Druckbogen
EP0687997A3 (de) * 1994-06-17 1998-09-16 Bobst S.A. Vorrichtung zum Sichern der Produktqualität einer Presse zur Herstellung von Verpackungen
DE102004014498A1 (de) * 2004-03-25 2005-10-13 Man Roland Druckmaschinen Ag Verfahren und System zur Druckqualitätskontrolle
EP2722180A1 (de) * 2012-10-18 2014-04-23 Baumer hhs GmbH Verfahren und Vorrichtung zur Passermessung und/oder Passerkorrektur
EP3077307B1 (de) 2013-12-04 2017-11-22 Koenig & Bauer AG Ausleger einer bogenverarbeitenden maschine und verfahren zum betrieb einer bogenverarbeitenden maschine
WO2018192684A1 (fr) * 2017-04-21 2018-10-25 Bobst Mex Sa Dispositif et procede de controle d'echantillons de poses, station d'evacuation et machine de traitement d'elements en forme de feuilles
CN112895749A (zh) * 2021-01-19 2021-06-04 苏州市祥和印刷包装有限公司 一种基于智能系统说明书生产工艺及设备

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JP3022387B2 (ja) * 1997-03-27 2000-03-21 三ツ星ベルト株式会社 ベルトスリーブ材の幅切断装置
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US7149726B1 (en) * 1999-06-01 2006-12-12 Stamps.Com Online value bearing item printing
DE19939165A1 (de) 1999-08-20 2001-03-01 Koenig & Bauer Ag Verfahren und eine Vorrichtung zur Verarbeitung von Blättern
US7216110B1 (en) * 1999-10-18 2007-05-08 Stamps.Com Cryptographic module for secure processing of value-bearing items
WO2001029779A1 (en) 1999-10-18 2001-04-26 Stamps.Com Secure and recoverable database for on-line value-bearing item system
US7490065B1 (en) 1999-10-18 2009-02-10 Stamps.Com Cryptographic module for secure processing of value-bearing items
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DE10000469C2 (de) * 2000-01-07 2003-07-03 Schott Spezialglas Gmbh Verfahren zum fortlaufenden Ablängen von Zuschnitten aus einem kontinuierlich bewegten Endlosmaterial und zugehörige Vorrichtung
US7257542B2 (en) * 2000-02-16 2007-08-14 Stamps.Com Secure on-line ticketing
SE518328C2 (sv) * 2000-05-25 2002-09-24 Tetra Laval Holdings & Finance Förfarande och anordning för längdmätning av förpackningsbanor
JP2002292853A (ja) * 2001-03-29 2002-10-09 Tomoegawa Paper Co Ltd マーキングシステム、マーキング方法およびマーキング装置
MXPA04012241A (es) * 2002-06-07 2005-02-25 Interface Inc Diseno, fabricacion e instalacion de modulos de tapetes asimetricos.
DE10346467A1 (de) * 2003-10-02 2005-05-19 E.C.H. Will Gmbh Messgerät und -verfahren zum Prüfen der Schnittqualität eines Blattes
JP2007326348A (ja) * 2006-06-09 2007-12-20 Canon Inc 画像形成製本システム
US9779556B1 (en) 2006-12-27 2017-10-03 Stamps.Com Inc. System and method for identifying and preventing on-line fraud
ATE445872T1 (de) * 2007-02-01 2009-10-15 Abb Oy Verfahren zur erstellung eines optimierten schnittplans für ein streifenförmiges material
WO2008143861A1 (en) * 2007-05-15 2008-11-27 Hudson Sharp Machine Co. Method of making and inspecting bags
WO2011142713A1 (en) * 2010-05-10 2011-11-17 Tetra Laval Holdings & Finance S.A. Apparatus and method for quality control of packaging blanks
JP5979470B2 (ja) * 2011-12-21 2016-08-24 大日本印刷株式会社 打抜機
US9713936B2 (en) * 2013-12-19 2017-07-25 Pitney Bowes Inc. System and method for ensuring cutting accuracy in a mailpiece wrapper
US10280564B2 (en) * 2014-09-26 2019-05-07 Opensoft, Inc. Cutting machine
JP6030732B1 (ja) * 2015-09-09 2016-11-24 株式会社小森コーポレーション 見当誤差量検出方法および装置
US10353652B2 (en) * 2017-08-16 2019-07-16 Xerox Corporation Dynamic imposition identifier for items cut from sheets
DE102019110854A1 (de) * 2019-04-26 2020-10-29 Koenig & Bauer Ag Verfahren zur Inspektion zumindest eines Bogens und Vorrichtungen zur Inspektion zumindest eines Bogens
CN112847564B (zh) * 2021-01-06 2022-06-28 深圳市乙方吸塑包装有限公司 一种针对高分子材料精准加工裁切方法

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EP0240950A2 (de) * 1986-04-07 1987-10-14 Quad/Tech, Inc. Bahnregistersteuerungssystem
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453974A3 (en) * 1990-04-26 1993-01-27 Bobst S.A. Controlling the print and cut quality in a machine for the production of packagings
EP0687997A3 (de) * 1994-06-17 1998-09-16 Bobst S.A. Vorrichtung zum Sichern der Produktqualität einer Presse zur Herstellung von Verpackungen
EP0810092A1 (de) * 1996-05-30 1997-12-03 GRAFICHE EIKON S.r.l. Vorrichtung und Verfahren zur Überprüfung von Druckbogen
DE102004014498A1 (de) * 2004-03-25 2005-10-13 Man Roland Druckmaschinen Ag Verfahren und System zur Druckqualitätskontrolle
EP2722180A1 (de) * 2012-10-18 2014-04-23 Baumer hhs GmbH Verfahren und Vorrichtung zur Passermessung und/oder Passerkorrektur
EP3077307B1 (de) 2013-12-04 2017-11-22 Koenig & Bauer AG Ausleger einer bogenverarbeitenden maschine und verfahren zum betrieb einer bogenverarbeitenden maschine
WO2018192684A1 (fr) * 2017-04-21 2018-10-25 Bobst Mex Sa Dispositif et procede de controle d'echantillons de poses, station d'evacuation et machine de traitement d'elements en forme de feuilles
KR20190140972A (ko) * 2017-04-21 2019-12-20 봅스트 맥스 에스에이 샘플 블랭크들을 검사하기 위한 디바이스 및 방법, 제거 스테이션 및 시트 형태의 요소들을 처리하기 위한 기계
CN112895749A (zh) * 2021-01-19 2021-06-04 苏州市祥和印刷包装有限公司 一种基于智能系统说明书生产工艺及设备
CN112895749B (zh) * 2021-01-19 2022-07-08 苏州市祥和印刷包装有限公司 一种基于智能系统的说明书生产工艺及设备

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CH682600A5 (fr) 1993-10-15
ES2074601T3 (es) 1995-09-16
ATE124902T1 (de) 1995-07-15
JPH04223172A (ja) 1992-08-13
EP0452769B1 (de) 1995-07-12
CA2040533A1 (en) 1991-10-19
JP2653729B2 (ja) 1997-09-17
US5241483A (en) 1993-08-31
DK0452769T3 (da) 1995-10-30
DE69111122D1 (de) 1995-08-17
DE69111122T2 (de) 1996-01-18
CA2040533C (en) 1997-08-12

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